직교 주파수 분할 다중의 데이터 처리방법 및 송수신장치
    2.
    发明公开
    직교 주파수 분할 다중의 데이터 처리방법 및 송수신장치 有权
    正交频分多路复用的方法与装置

    公开(公告)号:KR1020060120737A

    公开(公告)日:2006-11-28

    申请号:KR1020050042847

    申请日:2005-05-23

    Inventor: 임재성 박형원

    Abstract: A method for processing data of orthogonal frequency division multiplex(OFDM) and a transceiver apparatus thereof are provided to obtain optimum system performance by obtaining maximum diversity gain in a system using an OFDM/CDMA scheme. In a system using an orthogonal frequency division multiplex(OFDM) as a physical layer, a spread sequence is generated by applying a cyclic-shift orthogonal code to inputted data. The generated spread series is transmitted. The orthogonal code is generated by performing chip-shift of an OC(Orthogonal Complementary) code. The OC code has zero value of auto correlation value as to all delay except zero shift, and has zero value of cross correlation value as to all delay including zero shift.

    Abstract translation: 提供了一种用于处理正交频分复用(OFDM)的数据的方法及其收发器装置,以通过在使用OFDM / CDMA方案的系统中获得最大分集增益来获得最佳系统性能。 在使用正交频分复用(OFDM)作为物理层的系统中,通过对输入的数据应用循环移位正交码来生成扩展序列。 生成的扩展序列被传输。 通过执行OC(正交互补)码的码片移位来产生正交码。 OC代码对零移位以外的所有延迟都具有零值的自相关值,并且对于包括零漂移在内的所有延迟,具有零互相关值的值。

    초음파 발생 소자 및 이의 제조 방법
    4.
    发明授权
    초음파 발생 소자 및 이의 제조 방법 有权
    超声波发生元件及其制造方法

    公开(公告)号:KR101799075B1

    公开(公告)日:2017-11-17

    申请号:KR1020160056629

    申请日:2016-05-09

    Inventor: 허준석 박형원

    Abstract: 초음파발생소자는제1면에형성된복수의게르마늄(Ge) 나노구조를포함하고, 상기제1면에반대하는제2면을통해입사된광을흡수하여열을발생시키는광흡수층및 상기광흡수층의제1면상에위치하고, 상기광흡수층에서발생된열을전달받고, 전달된열에의한열탄성팽창에따라초음파를발생시키는제1열탄성층을포함한다.

    Abstract translation: 超声波产生元件包括形成在第一表面上的多个锗(Ge)纳米结构,吸收通过与第一表面相反的第二表面入射的光以产生热量的光吸收层, 以及第一热弹性层,其位于第一表面上并接收光吸收层中产生的热量,并根据传递的热量的热膨胀弹性产生超声波。

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